A Gas-Liquid Flowmeter Combining Vertical and Horizontal Pressure Fluctuations Induced by Local Void Fraction Variations

[+] Author and Article Information
P. Toma, R. Ridley

Alberta Research Council, Canada

M. Chen

Harding Instruments, Canada

J. Energy Resour. Technol 125(1), 35-42 (Mar 14, 2003) (8 pages) doi:10.1115/1.1514214 History: Received August 01, 2001; Revised May 01, 2002; Online March 14, 2003
Copyright © 2003 by ASME
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Normalized PDF obtained for the same gas-liquid regime (UGS=3.7 m/s,ULS=0.52 m/s) from V, H transducers
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Effect of gas/liquid superficial velocities
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Maximum PDF versus UGS (laboratory data) Linear calibration domain (from 0.15 to 2 m/s) (Medallion the four calibration zones)
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Comparison of power spectrum magnitude calculated from field amalgamated runs and laboratory (six runs)
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PDF MAX V versus superficial gas flow rate (medium liquid producer) during field operations—June 1999
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Calculated versus measured superficial gas and liquid velocities (2000 runs including various imposed pressure noise shape and level)
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Schematic of physical system and data acquisition and processing
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Schematic of the slug-typical pattern
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Critical (superficial) gas velocity at transition from slug/churn to annular regime
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Correlations between velocity/flow rate ranges and transducer sensitivity calculated for variable transport velocity and maximum gas-liquid density difference
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Normalized PDF functions—raw signal at 2 kHz approximately 2,000,000 points (10 min)-also reproducibility of two PDF obtained from same gas-liquid flowrates



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